evertz 570DSK-12G-F, User Manual

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570DSK-12G-F
Keyer With Logo Insertion
Page 6
2.6. SOURCE VIDEOS
2.6.1. Video Inputs
Video source connected to SFP1 is called Background video. This signal will be displayed through all the
outputs ports, Program (odd output ports) and Preview (even output ports), – still when Keyer is disabled.
Video source connected to SFP2 is named Fill video. Once the Keyer is enabled and all three input
signals are in place, the Fill video will be displayed in a front layer of the Background video.
The video source connected to SFP3 is called Key. Its pattern must be composed by a sharp black and
white image, in order to achieve two distinct images in one output video. Once the Keyer is activated, the
black section will display the Background video and the white will display the Fill video through the same
output signal (as output video seen in Figure 2-4).
In case, the user requires blended images, intermediate intensities of grey can be used in the Key input
video. The Blackground and Fill images on the output will be displayed proportionally with the percentage
of white and black used in the Key input video.
The following provides examples of the each video source and its composed video output:
Figure 2-4: Video Sources vs Video Output